6533b7d5fe1ef96bd1263ec7
RESEARCH PRODUCT
Lake browning impacts community structure and essential fatty acid content of littoral invertebrates in boreal lakes
Sami J. TaipaleUrsula StrandbergPetri KestiMinna HiltunenJussi VesterinenPaula Kankaalasubject
0106 biological sciencesliuennut orgaaninen hiilirasvahapotAquatic ScienceBiology010603 evolutionary biology01 natural sciencesChironomidaecomplex mixturesjärvetChironomidaeterrestrial organic matterAbundance (ecology)benthic invertebratesDissolved organic carbonparasitic diseasesLittoral zoneAsellus aquaticusravintoaineet14. Life underwatersurviaissääsketInvertebrateBaetidaeEcology010604 marine biology & hydrobiologyCommunity structureeliöyhteisötselkärangattomatbiology.organism_classificationTaxonpohjaeläimistösiiratorgaaninen ainespolyunsaturated fatty acidsdescription
AbstractMany lakes in the northern hemisphere are browning due to increasing concentrations of terrestrial dissolved organic carbon (DOC). The consequences of lake browning to littoral invertebrates, however, are not fully understood. We analyzed community structure and fatty acid (FA) profiles of littoral invertebrates in humic (DOC-rich) and clear-water lakes in Eastern Finland. We found higher abundance of chironomids (Diptera: Chironomidae) in humic compared to clear-water lakes, whereas stoneflies (Plecoptera) and mayflies (Ephemeroptera: Baetidae) were more abundant in clear-water lakes. Taxon explained 65% of the differences in the FA composition of littoral invertebrates. However, the proportion and content of polyunsaturated FAs of several taxa were significantly higher in clear-water lakes compared to humic lakes. Our results reveal differences in both community structure and nutritional quality of littoral invertebrates for fish between humic and clear-water lakes.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2021-11-22 |